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diff --git a/chromium/net/third_party/quiche/src/quic/core/crypto/null_encrypter.h b/chromium/net/third_party/quiche/src/quic/core/crypto/null_encrypter.h
new file mode 100644
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+++ b/chromium/net/third_party/quiche/src/quic/core/crypto/null_encrypter.h
@@ -0,0 +1,55 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef QUICHE_QUIC_CORE_CRYPTO_NULL_ENCRYPTER_H_
+#define QUICHE_QUIC_CORE_CRYPTO_NULL_ENCRYPTER_H_
+
+#include <cstddef>
+
+#include "net/third_party/quiche/src/quic/core/crypto/quic_encrypter.h"
+#include "net/third_party/quiche/src/quic/core/quic_types.h"
+#include "net/third_party/quiche/src/quic/platform/api/quic_export.h"
+#include "net/third_party/quiche/src/quic/platform/api/quic_string_piece.h"
+
+namespace quic {
+
+// A NullEncrypter is a QuicEncrypter used before a crypto negotiation
+// has occurred.  It does not actually encrypt the payload, but does
+// generate a MAC (fnv128) over both the payload and associated data.
+class QUIC_EXPORT_PRIVATE NullEncrypter : public QuicEncrypter {
+ public:
+  explicit NullEncrypter(Perspective perspective);
+  NullEncrypter(const NullEncrypter&) = delete;
+  NullEncrypter& operator=(const NullEncrypter&) = delete;
+  ~NullEncrypter() override {}
+
+  // QuicEncrypter implementation
+  bool SetKey(QuicStringPiece key) override;
+  bool SetNoncePrefix(QuicStringPiece nonce_prefix) override;
+  bool SetIV(QuicStringPiece iv) override;
+  bool SetHeaderProtectionKey(QuicStringPiece key) override;
+  bool EncryptPacket(uint64_t packet_number,
+                     QuicStringPiece associated_data,
+                     QuicStringPiece plaintext,
+                     char* output,
+                     size_t* output_length,
+                     size_t max_output_length) override;
+  std::string GenerateHeaderProtectionMask(QuicStringPiece sample) override;
+  size_t GetKeySize() const override;
+  size_t GetNoncePrefixSize() const override;
+  size_t GetIVSize() const override;
+  size_t GetMaxPlaintextSize(size_t ciphertext_size) const override;
+  size_t GetCiphertextSize(size_t plaintext_size) const override;
+  QuicStringPiece GetKey() const override;
+  QuicStringPiece GetNoncePrefix() const override;
+
+ private:
+  size_t GetHashLength() const;
+
+  Perspective perspective_;
+};
+
+}  // namespace quic
+
+#endif  // QUICHE_QUIC_CORE_CRYPTO_NULL_ENCRYPTER_H_